Re: [Qemu-devel] [PATCH 3/5] nbd: Implement client use of NBD FAST_ZERO

2019-08-30 Thread Vladimir Sementsov-Ogievskiy
23.08.2019 17:37, Eric Blake wrote: > The client side is fairly straightforward: if the server advertised > fast zero support, then we can map that to BDRV_REQ_NO_FALLBACK > support. A server that advertises FAST_ZERO but not WRITE_ZEROES > is technically broken, but we can ignore that situation a

[Qemu-devel] [PATCH 3/5] nbd: Implement client use of NBD FAST_ZERO

2019-08-23 Thread Eric Blake
The client side is fairly straightforward: if the server advertised fast zero support, then we can map that to BDRV_REQ_NO_FALLBACK support. A server that advertises FAST_ZERO but not WRITE_ZEROES is technically broken, but we can ignore that situation as it does not change our behavior. Signed-o